Mitsubishi Galant (2004+). Manual — part 272
SYMPTOM PROCEDURES
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SIMPLIFIED WIRING SYSTEM (SWS)
54B-279
STEP 1. Check the input signal by using "DATA LIST"
menu of the SWS monitor.
Turn the ignition switch to the ACC position before checking
input signals from the windshield wiper switch.
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958. Connect
special tool MB991910 before connecting special tool
MB991812. Be sure to connect special tool MB991806 after
turning on special tool MB991824.
(1) Connect the special tool. Refer to "How to connect SWS
monitor
."
(2) Operate scan tool MB991958 according to the procedure
below to display "COLUMN ECU."
a. Select "Interactive Diagnosis."
b. Select "System select."
c. Select "SWS."
d. Select "SWS MONITOR."
e. Select "Data List."
f. Select "COLUMN ECU."
(3) Check that normal conditions are displayed for the items
described in the table below.
Q: Are normal conditions displayed for "INT WIPER SW",
"LO WIPER SW", "HI WIPER SW" and "MIST WIPER
SW"?
YES : Go to Step 2.
NO : Refer to Inspection Procedure M-6 "ETACS-ECU
does not receive any signal from the windshield mist
switch
."
ITEM NO.
ITEM NAME
NORMAL
CONDITION
ITEM 05
INT WIPER SW
ON
ITEM 06
LO WIPER SW
ON
ITEM 07
HI WIPER SW
ON
ITEM 08
MIST WIPER SW
ON
AC305411AB
MB991910
DATA LINK
CONNECTOR
MB991827
MB991824
MB991806
MB991812
AC302210
COLUMN SWITCH
CONNECTOR
COLUMN SWITCH
CONNECTOR AT
HARNESS SIDE
MB991812
AB
SYMPTOM PROCEDURES
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SIMPLIFIED WIRING SYSTEM (SWS)
54B-280
STEP 2. Check windshield wiper motor connector A-03 for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is windshield wiper motor connector A-03 in good
condition?
YES : Go to Step 3.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. Verify that the windshield wiper operates
normally when the windshield wiper switch is moved
to each position.
STEP 3. Check the windshield wiper motor.
(1) Disconnect windshield wiper motor connector A-03.
(2) Connect a battery to the windshield wiper motor as shown.
Then check the windshield wiper motor operates normally
at high and low speeds.
Q: Does the windshield wiper motor operate normally?
YES : Go to Step 4.
NO : Replace the windshield wiper motor. Verify that the
windshield wiper operates normally when the
windshield wiper switch is moved to each position.
AC305206
A-03 (B)
HARNESS SIDE
CONNECTOR: A-03
AH
AC305206
A-03 (B)
HARNESS SIDE
CONNECTOR: A-03
AH
AC306750
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
CHECK OPERATION
LOW SPEED
HIGH SPEED
AB
SYMPTOM PROCEDURES
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SIMPLIFIED WIRING SYSTEM (SWS)
54B-281
STEP 4. Check front-ECU connector A-12X for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is front-ECU connector A-12X in good condition?
YES : Go to Step 5.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. Verify that the windshield wiper operates
normally when the windshield wiper switch is moved
to each position.
STEP 5. Check the wiring harness between windshield
wiper motor connector A-03 (terminals 1 and 2) and
front-ECU connector A-12X (terminals 25 and 24).
Q: Is the wiring harness between windshield wiper motor
connector A-03 (terminals 1 and 2) and front-ECU
connector A-12X (terminals 25 and 24) in good
condition?
YES : No action is necessary and testing is complete.
NO : The wiring harness may be damaged or the
connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary. Verify that
the windshield wiper operates normally when the
windshield wiper switch is moved to each position.
AC305977
CONNCTOR: A-12X
AI
21
22
23
24
25
26
27
28
29
30
31
RELAY BOX SIDE
AC305206
A-03 (B)
HARNESS SIDE
CONNECTOR: A-03
AH
AC305977
CONNCTOR: A-12X
AI
21
22
23
24
25
26
27
28
29
30
31
RELAY BOX SIDE
SYMPTOM PROCEDURES
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SIMPLIFIED WIRING SYSTEM (SWS)
54B-282
INSPECTION PROCEDURE G-4: Windshield Wiper and Washer: Windshield wipers does not stop at
the predetermined park position.
.
WINDSHIELD
WIPER MOTOR
FRONT-ECU
WIPER
AUTOMATIC
STOP RELAY
RELAY
BOX
IGNITION
SWITCH (ACC)
Windshield Wiper Automatic Stop Relay Circuit
AC305206
A-03 (B)
CONNECTOR: A-03
AI
AC305977
CONNECTOR: A-12X
AF
AC305231
CONNECTOR: C-29
AH
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